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1KsiążkaWydane 1977“…Association for Programmed Learning and Educational Technology…”
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2KsiążkaWydane 1975“…Association for Programmed Learning and Educational Technology…”
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3KsiążkaWydane 1976“…Association for Programmed Learning and Educational Technology…”
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4CzasopismoWydane 1967“…Association for Programmed Learning and Educational Technology…”
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5Czasopismo“…Association for Programmed Learning and Educational Technology…”
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6KsiążkaWydane 1970“…Association for Programmed Learning and Educational Technology…”
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7Materiały konferencyjneWydane 1969“…Association for Programmed Learning and Educational Technology…”
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8KsiążkaWydane 1973“…Association for Programmed Learning and Educational Technology…”
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9CzasopismoWydane 1967“…Association for Programmed Learning and Educational Technology…”